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Addressing fix for: Clickhouse crash issue on power pc build #43

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Addressing fix for: Clickhouse crash issue on power pc build #43

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13 changes: 11 additions & 2 deletions libs/context/src/asm/jump_ppc64_sysv_elf_gas.S
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Original file line number Diff line number Diff line change
Expand Up @@ -97,7 +97,7 @@ jump_fcontext:
# endif
#endif
# reserve space on stack
subi %r1, %r1, 184
subi %r1, %r1, 200

#if _CALL_ELF != 2
std %r2, 0(%r1) # save TOC
Expand Down Expand Up @@ -133,6 +133,10 @@ jump_fcontext:
# save LR as PC
std %r0, 176(%r1)

# save VS63
li %r31, 184
stvx %v31, %r1, %r31

# store RSP (pointing to context-data) in R6
mr %r6, %r1

Expand All @@ -145,6 +149,11 @@ jump_fcontext:

ld %r2, 0(%r1) # restore TOC
#endif

# restore VS63
li %r31, 184
lvx %v31, %r1, %r31

ld %r14, 8(%r1) # restore R14
ld %r15, 16(%r1) # restore R15
ld %r16, 24(%r1) # restore R16
Expand Down Expand Up @@ -180,7 +189,7 @@ jump_fcontext:
mtctr %r12

# adjust stack
addi %r1, %r1, 184
addi %r1, %r1, 200

#if _CALL_ELF == 2
# copy transfer_t into transfer_fn arg registers
Expand Down
12 changes: 10 additions & 2 deletions libs/context/src/asm/ontop_ppc64_sysv_elf_gas.S
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Original file line number Diff line number Diff line change
Expand Up @@ -97,7 +97,7 @@ ontop_fcontext:
# endif
#endif
# reserve space on stack
subi %r1, %r1, 184
subi %r1, %r1, 200

#if _CALL_ELF != 2
std %r2, 0(%r1) # save TOC
Expand Down Expand Up @@ -133,6 +133,10 @@ ontop_fcontext:
# save LR as PC
std %r0, 176(%r1)

# save VS63
li %r31, 184
stvx %v31, %r1, %r31

# store RSP (pointing to context-data) in R7
mr %r7, %r1

Expand All @@ -144,6 +148,10 @@ ontop_fcontext:
mr %r1, %r4
#endif

# restore VS63
li %r31, 184
lvx %v31, %r1, %r31

ld %r14, 8(%r1) # restore R14
ld %r15, 16(%r1) # restore R15
ld %r16, 24(%r1) # restore R16
Expand Down Expand Up @@ -203,7 +211,7 @@ return_to_ctx:
mtlr %r0

# adjust stack
addi %r1, %r1, 184
addi %r1, %r1, 200

# jump to context
bctr
Expand Down